Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Life Cycle Analysis of Greenhouse Gas Emissions of By-Product Hydrogen Produced from Coke Oven Gas in Steel Mill

제철소 코크스 오븐 가스 부생수소 전과정 온실가스 배출량 분석

  • YEIM, LEE (Department of Mechanical Engineering, Seoul National University) ;
  • WOOJAE, SHIN (Department of Mechanical Engineering, Seoul National University) ;
  • YEJIN, YU (Department of Mechanical Engineering, Seoul National University) ;
  • HANHO, SONG (Department of Mechanical Engineering, Seoul National University)
  • 이예임 (서울대학교 기계공학부) ;
  • 신우재 (서울대학교 기계공학부) ;
  • 유예진 (서울대학교 기계공학부) ;
  • 송한호 (서울대학교 기계공학부)
  • Received : 2022.09.30
  • Accepted : 2022.12.08
  • Published : 2022.12.30
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Abstract

The "Hydrogen Economic Activation Road map" was announced in 2019, and hydrogen demand is expected to exceed 470,000 tons per year in 2022 and keep increasing. Under this circumstance, it has become important to understand the greenhouse gas (GHG) emissions associated with various hydrogen production pathways. In this study, the evaluation of life cycle GHG emissions regarding the hydrogen produced as by-product from coke oven gas (COG) in steel mill is conducted. To cover the possible range of operations, three literatures were reviewed and their data of inputs and outputs for the process were adopted for calculation. Life cycle inventories and emission factors were mostly referred to GaBi and Intergovernmental Panel on Climate Change (IPCC) guidelines, respectively. When there are multiple products from a single process, the energy allocation method was applied. Based on these sources and the assumptions, the life cycle emission values of COG-based hydrogen were found to be 3.8 to 4.7 kg/CO2-eq./kg-H2.

Keywords

Acknowledgement

본 연구는 산업기술혁신사업(20203020040010), 수소 전주기(생산, 저장/이송, 활용) 경제성 환경성평가 기술 개발)의 일환으로 서울대학교 정밀기계설계공동연구소를 통한 산업통상자원부의 연구비 지원으로 수행되었습니다.

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